Silica aerogel can be produced by using ambient pressure drying (APD) or supercritical drying depending on the required properties and kind of application. Processing time for ambient pressure dried silica aerogels are longer due to the time consuming steps such as hydrolysis and solvent exchange. Considerable decrease in time has been reported by a few research groups by employing shaking during the solvent exchange. We are reporting further reduction in processing time of tetraethoxysilane (TEOS)-based silica aerogel by carrying out the hydrolysis process at elevated temperature. The aerogel obtained in least processing time showed low density (0.066 kg/m³), low thermal conductivity (0.043 W/mK), high specific surface area, and porosity. This shows that elevated temperature hydrolysis does not hamper the desired properties of the product.

二氧化硅气凝胶可通过使用常压干燥（APD）或超临界干燥来生产，具体取决于所需的性能和应用类型。由于诸如水解和溶剂交换的耗时步骤，常压干燥的二氧化硅气凝胶的处理时间更长。一些研究小组报告了在溶剂交换过程中采用摇动的方式，可大大减少时间。我们正在报告通过在高温下进行水解过程来进一步减少基于四乙氧基硅烷（TEOS）的二氧化硅气凝胶的加工时间。在最短的处理时间内获得的气凝胶显示出低密度（0.066 kg / m ³），低导热率（0.043 W / mK），高比表面积和孔隙率。这表明高温水解不会妨碍产物的所需性能。